Rotary perfecting sheet-printing mechanism.



H. M. BARBER.

Patented Oct. 16, 1917.

4 SHEETS-"SHEET I.

ROTARY PERFECTING SHEEY PRlNTING MECHANISM.

MPucmlon man 1AN.22. 1913.

H. M..BARBER. IROTARY PERFEC-'ING SHEEI PRINTING IIICHANISNI.

APPLICATION FILED JAN. 22, 913.

Patented Oct. 16, 1917.

4 SHEETS-SHEET 2.

H. M. BARBER. ROTARY PERFECTING SHEET FHINTNG MESHANISM.

AFPLICMION fiLED IAN. 22,1913

Patented Oct. 16, 1917.

4 SHEETS-SHEET 3.

H. M. BARBER. ROTARY PEHFECTING SHEE PRNTING MECHANISM.

APPLICAUON HLED }AN.22. I9l3.

Patent/Bd 0G13. 16, 1917.

4 sains-SHEET 4.

Win ensues.'-

65 inexistenteswere@ eviiider 4.

UNITED STATES 4PATENT OFFICE.

Bowser n. essere, or sroiiiiieroii.

coNNnoTIcUT, AssIeNon, BY MEsNE .fission- MENfTS, TQ C. B. COTTBELL 6pSONS COMPANY, QF NEW YQRK, N. Y-, A CORPORATION 0F DELAWARE.

Specification of `Letters Patent,

Patented Oot. 16., 1917,.

Apphrativn tiled January 22.. 19MB. Serin! No. 142.553.

To all whom it may concern.'

lie it, known that I, Howie M. BARBER, a citizen of the, United Statesend. resident of Stoniugtom in the county of New London and State ofConnecticut, have invented :i new and useful Improvement in RotaryPerfecting Sheet-Printing Mechanism` of which the following is especification.

The object of this invention is to prevent offsetting in rotaryperfecting sheet printing machines and comprises novel means forpreventing the offsetting of the first printed side of the sheet ontothe seoond impression cylinder during the printing of the other side ofthe sheet; and also preventing the offsettingI of the perfected sheetson one enother in the delivery. This invention more particularlyconsists in providing Ineens whereby the second impression cylinder iscaused toteke iirst e slip sheet and then a sheet printed on one side,carry the two through the second printing operation and iinall deliverthe perfected sheet and the slip eet together.

` practical embodiment of my invention is represented in theaccompanying drawingsa in which-.-

Figure l and Fig. 1 a is e view in Side elevation partly in section ofso much of a rotary perfecting sheet printing machine es will `give aclear understanding of this present nventien,

Fig? 2 and Fig. 2 represents the seme 1n vertical section taken from.front to teer,

Fig. 3 represents the; drivin means for the; printing sheet feed; meeinem, and

F1 i represen-.ts ,the 7riviiiii means for the 1p sheetfeediumechanism..

T, eprinti `meereniisin ier' printing on the {ir-st sjdeo the she v t isherein shown es comprising; e gelate cylinder i end itsv impressionveylixi r The printing ineehs nismfor yp-i'iliti upon the opposite .sideof ,die sheetis heren siiown es @emmene a plurality of plate cylinders 3and their mi printing sheets liist impressioneylinder 2 includes 5. TheIneens Yfor feedin theV ip sheets te the sieeond impression cy inder 4includes the cylinder 6,

The portion of the .delivery mehanism which is shown herein inelndes thefirst delivery reel 7, vyhich coacts with the second 'llmeen for feedingthe 'a feedin.cylinder :lieder "4 and. Athe mended@ Livery reel 8 whiohooacts with the first delivery reel 7.

Means. are shown for feedin the sheets from the printing sheet feed tele 9, to, the sheet step 10 at the sheet feeding cylinder 5i, whiohmenne oomprises the endless tape cnrriers 11, 12, the feedi-n rollers 13and the drop rollers 14 errang to ooect with the rollers 13` at theproper intervals. A sheet stop 15 is also provided at the table 9, whichsheet stop is cerried b the movable sup port 16 for the drop rol ers sothat the sheet stop 15 is moved into and out of operative position esthe drop rollers are moved out of and into operative osition. Similarmeans may e employed for feeding slip sheets from thefeed table 17 tothe stop 1 Vet the slip sheet feeding cylinder 6, which means comprisesthe endless te eerriers 19. 20, the sheet stop 21, the eeding rollers 22end the drop rollers 23 arranged toy eoect with the rollers 22.

While I` have described the printed sheets es being fed from the table9, it is to be understood that the sheetslney he out and fed from a.roll, ii so desired..

The printing sheet feeding cylinder 5 is provided with n set of:grippers 24 which is arranged to take the sheets from the tape cerrier11 end transfer them to the grippers 25 on the first impression cylinder2.

-The sli sheetfeeding cylinder 6 is provided wit a. set of gri. pens 26which 'is arranged to tek@ a slip s ret from the endless tape carrier 19and transfer the Sheet to a setoi grippers 2.7 on the second impressioncylinder 4e- The set oi. grippers 27 after it has taken the slipsheetfrom the set of grippers will take ai first side printed sheetrom'the serJ of grippers 25 on the rt impression cylinder2 and conveythe two sheets with the slip sheet interposed between the `printed sideof the printed sheet and .the ,@,Yimdf vMid eolivoy the two sheetsbeneath the. Ylite cylinders 3. The iirsr delivery reel is provided witha set of gri-pliers 2 8 arrarlgdte talee the perfected Sheet 4Midifileill?-` et imm the set ef erinners- 27 and transfer the same to. the4`pperse 95th@ second delivery reel 8i; vvivida delivery neel willdeliver the sheets to the balance of the deliver mechanism, mitV shownherein.-

In the :alcool-n-l nyng drawings, I have shown the eylin ers 5, 2, 6,and 8 as each mended with eneiset `et ,grimms enelsthe feb cylinder 4fasprovidedwith three sets of g. Pf'lfI'S- 21, i,

' he movement of the sheet stop 10 is controlled by a cam and themovement of the sheet stop 18 is controlled by a cam l31.

A tumbler cam mechanism 32 is provided for ripening and closing the gripers 24 of the printing sheet feeding cy inder 5 to transfer the sheetfrom itsfeeding tapes to the first impression cylinder 2. A fixed cam33- is provided for openingthe grippers 25 to transfer the first sideprmtedsheet to the second impression cylinder grippers and to holdthesaid grippers `25 open to receive a succeeding printing sheet-from thefeeding cylinder 5.j A tumbler cam mechanism 34 is provided for o eningand closing the grippers 26 of the s ip sheet feeding cylinder 6 totransfer a slip sheet from the tape carrier to the second impressioncylinder.

A fixed cam 35 is arranged in position to open the grippers 27 todeliver a perfected sheet and a slip sheet together to the Erst deliveryreel 7 and to keep the grippers open to receive a slip sheet from thecylinder 6. A fixed cam 36 is arranged in position to open the grippers27 to receive a first side printed sheet from Lthe first impressioncylinder'2. Pressure rollers 37 are arranged in position to keep theslip sheet in register while the grippers 27 are b ei'ng opened toreceive a firstside rint'ed sheet fromthe first impression cylinder 2.

A lfixed cam 38 isprovided for openin the gripfpers 28 of the firstdelivery reel to trans er a perfected sheet and a s' ip sheet togetherto the second delivery reel 8 to kee the said grippers open to receive asuccee ing pair of perfected and slip sheets from the rippers 27.

A 'Xed cani' 39 is provided for opening the grippe'rs 29 to receive theperfected and slip sheets from the reel 7 and deliverthe same.

The several cylinders and reels are driven vat the roper speeds withrespect to one another` irugh the trains of gearing 41, 42, 43,44, 45,46; 47 and 48. 4' ""The shaft 49 of the printing sheet feedifngcylinde'r has a driving connection with the Asheet feeding means throughthe train of g'ilaiig50, 51 52, 53, 54,55 56, `57, 58, 'che similarlydie Shaft `59 of die Slip shea feeding cylinder G has adrivingconnection ,with its ,feeding means throu'gh the train of "gearssog-c1562, es, e4, e5, 6e,Y e7, es. ,'f'rhedrop rollers 14 and the sheetstop v15 are habrcnght i'ntb and out of operativeposittio'nby 'a cani69,' "n the shaft 49 and its coneizg parts-an the drop rollers'23 andsiie "Stop 21 are'rnoved into and out of their operativepositi'on by acani 'mon theshaft f-gand itsjonnectiu parteV fea-1* -r. f5 f, l

fddpesfef Hummm :werbe detained fbr are 'dents escales :myli'nventioinAIfzhtive signed my 'presence of two' Witnesses, this four-t dayofJaiIary, A. D. 1913'.

While I haveshown a first printin .mechanism yirren'gedfto print onecolor." "Q" vaseoond printing' mechanism arrangedgtq print a pluralityof colors, it is to be understood that I contem late using thisinvention in connection Witli single or multi-color Work, asdesired.

It will be seen that by introducing slip sheets between the secondcylinder and the freshly printed side of the printed sheet as it comesfrom the first printin mechanism, the slip sheet will act as an o setsheet and will prevent the ink from the first side printed sheet frombuilding up upon the top sheet ofthe make-ready 'on the secondimpression cylinder. It Will also be seen that this slip sheet by beingdelivered together With the perfected printed sheet serves to preventofi'- setting from one printed sheet onto another printed sheet in apile.

It is evident that slight changes might be resorted to in the form,construction and arrangement of the several parts Without departing fromthe spirit and scope of my invention; hence I do not wish to limitmyself strictly to the structure herein set forth, but

What I claim is 1. In a rotary perfecting sheet printing machine,printing mechanisms for printing on both sides of a sheet includingfirst impression and4 plate cylinders and second impression and platecylinders, a printingshe'et feeding cylinder arranged to feed a sheettothe first im ression cylinder and a slip sheet feeding cy ind'erarranged to feed a Ysli n sheet. directly to the second impression cyiinder, the first im ression cylinder being arranged to trans er thefirst side printed sheet to the second impression cylinder on top of thesaid slip sheet.

2. In a rotary perfectingsheet printing machine, printing mechanisms forprinting on both sides of Va sheet including first and second impressioncylinders, a printing sheet feeding cylinder arranged to feedsl sheet tothe iirst impression cylinder and la slip sheet feedingcylinder arrangedto feed a sheet to the second impression cylinder, the first ,im-

pression cylinder being arranged 'to' transfer i, the first side printedsheet tothe second imi pression 'cylinder on top of the said slip sheet,'thesecond impression cylinder `heling arranged to carry the two sheetsthrough the t''getlier. y

In testimony that I claim the foregoi'ng'a's Rhine in ses@ f j jj HQWARDBARBER-1:* Witnesses; "I 1 y S'rninMAN,

Washington, D.

seeondprnting operation and delivering@ y aaaresfngwne"*oeanrmteffeffrrassg if@

